﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Demo7
{
	class Program
	{
		static void Main(string[] args)
		{
			int[] arr = { 10, 60, 50, 45, 80 };

			for (int i = 0; i < arr.Length; i++)
			{
				if (i%2==0)
				{
					Console.WriteLine(arr[i]);
				}
			}
			Console.ReadLine();
		}
	}
}
